R12B-5发布加入eunit 支持从archive读取代码

1. The eunit application (for unit testing of Erlang modules) by Richard Carlsson is now included in OTP.
2. There is now experimental support for loading of code from archive files. See the documentation of code, init,erl_prim_loader and escript for more info.
3. public_key first version.

还是R12的bug fix版本 没有太多新功能引入.

build后eunit下没有include目录和相应的eunit.hrl文件，俺只好手工拷了一个，还是eunit有了新的include方法？

貌似是打包时漏掉了。。。maillist有人发了邮件问

make install的时候忘记copy了

向着standalone程序迈出了一步。